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CPC Subgroup Additional Only
C09K 2211/18

Metal complexes

Full Title

Chemical nature of organic luminescent or tenebrescent compounds > Metal complexes

7 direct subcodes

Child Classifications

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  • C09K 2211/181 of the alkali metals and alkaline earth metals
  • C09K 2211/182 of the rare earth metals, i.e. Sc, Y or lanthanide
  • C09K 2211/183 of the refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta or W
  • C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
  • C09K 2211/186 of the light metals other than alkali metals and alkaline earth metals, i.e. Be, Al or Mg
  • C09K 2211/187 of the iron group metals, i.e. Fe, Co or Ni
  • C09K 2211/188 of other metals not provided for in one of the previous groups

Top Applicants

Top 10 applicants by patent filingsfor class C09, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 7,954
  2. HALLIBURTON ENERGY SERVICES GROUP US 6,584
  3. NITTO DENKO CORPORATION JP 6,500
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
  5. DOW GLOBAL TECHNOLOGIES US 6,324
  6. FUJIFILM JP 5,832
  7. MERCK PATENT DE 5,481
  8. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
  9. SAMSUNG DISPLAY KR 5,105
  10. NITTO DENKO CORPORATION 3,584